19 results about "Corrosion reaction" patented technology

This invention discloses a high-temperature liquid sodium-metal oxidation corrosion experimental system, relating to the field of corrosion resistance testing devices. It includes an experimental body, a gas path system, a heating coil, multiple thermocouples, a controller, and a DC power supply. The experimental body comprises a pressure-holding container, multiple independent sample containers, and a positioning disk. Each sample container consists of hollow bolts, nuts, annular gaskets, and a wire mesh wick. The metal sample is placed on the wire mesh wick. The gas path system is connected to the pressure-holding container. The heating coil is wound around the outer surface of the pressure-holding container, and the thermocouples are inserted into the pressure-holding container. The controller is connected to both the thermocouples and the DC power supply, which is also connected to the heating coil. The wire mesh wick, metal samples, and sample containers are made of the same material, thus avoiding interference with the corrosion reaction of the metal samples. The sample containers are independent, and different metal samples do not affect each other. Combining different oxygen contents, metal samples, and wire mesh wick mesh sizes allows for the acquisition of richer experimental data in a single operation.

This application discloses an electrode structure, a battery cell, and a battery. The electrode structure includes a current collector, a first coating layer, and a second coating layer. Along the thickness direction of the current collector, the first coating layer is disposed on at least one side of the current collector; and along the thickness direction of the current collector, the second coating layer and the first coating layer are located on the same side. Along the width direction of the current collector, the second coating layer is disposed on at least one side of the first coating layer. The static voltage of the second coating layer is lower than the static voltage of the first coating layer. In the electrode structure of this application embodiment, the static voltage of the second coating layer is lower than the static voltage of the first coating layer, thus reducing the oxidation potential at the interface between the active material and the tab, reducing the oxidation potential at the interface between the active material and the tab (enriched electrolyte), thereby greatly reducing the corrosion reaction rate, reducing the risk of corrosion fracture at the interface between the positive electrode active material and the tab, and improving the cycle performance of the battery.

The application discloses a kind of theoretical model for evaluating pipeline steel macro-battery corrosion under elastic-plastic deformation, the theoretical model includes following physical field and coupling mechanism thereof: physical field: (1) stress-strain field: the elastic-plastic mechanics constitutive model based on von Mises yield criterion and isotropic hardening criterion is used to characterize the mechanical behavior of pipeline steel;(2) electrochemical field: the electrode kinetics model based on Tafel equation is used to characterize the corrosion reaction kinetics process on the surface of pipeline steel;Coupling mechanism: the mechanical-electrochemical double-path coupling mechanism for characterizing macro-battery corrosion.The model realizes the quantitative description of the macro-battery corrosion behavior induced by elastic-plastic deformation by coupling the mechanical deformation and electrochemical corrosion process of the material.The application realizes the two-way interaction of stress-strain field and electrochemical field under the background of macro-battery corrosion, and can quantitatively reveal the regulation of deformation on the intensity and evolution process of macro-battery corrosion.

This disclosure provides a solar cell, a semi-finished cell, and a fabrication method thereof, belonging to the field of solar cell technology. The semi-finished cell includes a cell body and a porous silicon layer serving as a texturing precursor. The porous silicon layer is disposed at least on the front surface of the cell body, with a porosity of 30%–70% and an average pore depth of 50 nm–500 nm. By preparing a porous silicon layer at least on the front surface of the cell body, this disclosure provides numerous and uniform nucleation sites for subsequent alkaline texturing. In an alkaline solution, the corrosion reaction preferentially begins from the pore edges, guiding the uniform and dense growth of the pyramid texture. Furthermore, the porous silicon layer serves as an effective anti-reflection structure, forming a dual anti-reflection effect with the subsequently formed pyramid textured surface, reducing reflection. In addition, the uniform textured surface further formed from the porous silicon layer has lower surface recombination, which is beneficial for improving minority carrier lifetime and increasing cell efficiency.

The utility model provides a kind of corrosion-resistant EPS reaction kettle feeding device, it is related to feeding equipment technical field, including the feeding assembly of being set on the upper end of reaction kettle main body, feeding assembly is provided with multiple groups, the feeding assembly of multiple groups is evenly encircling distribution about the outer wall of reaction kettle main body, cavity of outer frame is equipped with electric push rod, the output end shaft of electric push rod is connected with storage tank, one end of storage tank is rested on the upper wall of reaction kettle main body, according to production formula, different kinds of raw materials are respectively connected in multiple feeding assemblies encircling distribution in the outer wall of reaction kettle main body, multiple feeding assemblies can ensure that multiple raw materials can be simultaneously fed, drive electric push rod, electric push rod converts electric energy into mechanical energy, according to preset program, its output end does linear extension and contraction motion, when electric push rod lengthens, drives the one end of storage tank connected with its shaft to elevate, so that storage tank is in inclined state, with the inclination of storage tank, internal raw materials flow to discharge port under the action of gravity, realize the purpose of synchronous feeding.

The present application relates to supercritical water reaction technical field, provide a kind of organic waste liquid inorganic reaction and desalination integration device, inner body is arranged in the inside of outer body, and first gap is left between inner body and outer body;Particle discharge device is connected with inner body and the outside of body;The inside of inner body is provided with outer water pipe and inner water pipe, and length is less than the length of inner body, second gap is left between outer water pipe and inner body, third gap is left between inner water pipe and outer water pipe, and the bottom of inner water pipe and outer water pipe is provided with corrosion-resistant plate;Inner body is provided with reactant inlet and reactant outlet;Outer body is provided with cooling water inlet and cooling water outlet.The present application can avoid salt precipitation to plug and corrode reactor and pipeline and equipment in rear end, reduce reactor cleaning salt and maintenance frequency, prolong the service life of main equipment to ensure the continuous and stable operation of supercritical water reactor, and then increase the processing efficiency of organic waste liquid.

The utility model belongs to the corrosion test technical field, concretely is a kind of multifunctional molten salt corrosion test system, it mainly includes corrosion reation kettle and molten salt buffer tank, several fixed clamping grooves are arranged in the corrosion reation kettle, several fixed clamping grooves are installed on lower flow guide plate, operating hole is arranged in the corrosion reation kettle top, and the both ends of corrosion reation kettle are connected with circulating pipeline by flange;The utility model is by miniature industrial circulating pump, and high-temperature molten salt medium in molten salt buffer tank is transported to corrosion reation kettle, and the test piece on the fixed clamping groove fixed in corrosion reation kettle is formed scouring.Corrosion reation kettle is the main reaction device of the present test system, and corrosion reation kettle is connected with external circulating pipeline by flange, and it is convenient to disassemble.

This invention discloses a corrosion-resistant water pump housing, comprising a pump housing, a button battery, a battery compartment, a current control module, and electrode strips. The pump housing has an outer surface and an internal cavity. The battery compartment holds at least one button battery. The current control module stably outputs current, driving the electrode strips to release electrons, forming cathodic protection and inhibiting corrosion on the pump housing surface. The battery compartment and sealing cover are designed to be waterproof, ensuring the battery and circuitry are protected from moisture or corrosive liquids. The current control module automatically adjusts the current output based on battery voltage changes, ensuring stable system operation. This invention, through stable current output and the cathodic protection of the electrode strips, effectively improves the corrosion resistance of the pump housing, extends the service life of the pump, and reduces maintenance frequency and costs.

The application provides a heavy-duty anticorrosive coating with synergistic effect of corrosion inhibition and self-healing and a preparation method thereof, which comprises a super-hydrophobic bottom layer and a self-healing polyurethane top layer compounded on the super-hydrophobic bottom layer, wherein the super-hydrophobic bottom layer comprises polyphenylamine in-situ modified hexagonal boron nitride composite nanoparticles loaded with corrosion inhibitors, an epoxy resin, a curing agent and a silane coupling agent; and the self-healing polyurethane top layer comprises polyurethane containing DA reversible covalent bonds and an organic solvent. The heavy-duty anticorrosive coating with synergistic effect of corrosion inhibition and self-healing comprises a super-hydrophobic bottom layer and a self-healing polyurethane top layer. The functional nanosheet loaded with corrosion inhibitors is prepared into a super-hydrophobic layer as the bottom layer, which can avoid the problem of uneven dispersion of nanomaterials in the resin coating and cause internal micro-defects of the coating. On the other hand, when a corrosion reaction occurs at the coating interface, the corrosion inhibitor in the super-hydrophobic bottom layer can quickly play a role in corrosion inhibition and passivation to prevent the corrosion reaction of the metal interface.

This invention belongs to the field of medical materials technology, specifically relating to a bioresorbable corrosion-resistant magnesium alloy cardiovascular stent and its preparation method. This invention, through multi-element microalloying design, introduces specific types and amounts of alloying elements (such as Zn, Ca, Sr, Mn, and Nd) to synergistically regulate the electrode potential and microstructure of the alloy while ensuring biocompatibility. It also provides matching precision plastic processing and post-processing techniques. Through grain refinement, texture optimization, and surface modification, excellent radial support strength is achieved while simultaneously realizing controllable degradation rate and uniform degradation pattern. The results of the embodiments show that the corrosion reaction of the magnesium alloy cardiovascular stent of this invention occurs uniformly, solving the key problem of uniform degradation of biodegradable magnesium alloy stents.

The utility model discloses a kind of high-efficiency mixed anticorrosion reaction kettle, including horizontal kettle body, the horizontal kettle body is anticorrosion composite kettle body, the top of the horizontal kettle body is equipped with feed pipe, bottom is equipped with discharge pipe, the middle part of the horizontal kettle body is equipped with main stirring shaft, screw belt stirrer is equipped on the main stirring shaft, the both sides of the main stirring shaft are equipped with auxiliary stirring shaft respectively, turbine stirrer is equipped on the auxiliary stirring shaft, scraping wall plate is connected on the main stirring shaft, the scraping wall plate is contacted with the inner wall of the horizontal kettle body, ultrasonic wave vibration plate is equipped in the bottom wall of the horizontal kettle body, cathodic protection ring is also equipped in the inner wall of the horizontal kettle body. The utility model can solve the deposition and corrosion problem caused by uneven stirring, realize the efficient long-term, low-maintenance operation of whole, especially suitable for the production scene of sodium diacetate and other crystalline corrosive medium.

The utility model provides a kind of boiling nitric acid three-phase corrosion weight loss experimental device under high-temperature pressure reduction environment, including pressure reduction boiling corrosion reaction system, heating system, nitric acid vapor absorption drying system, gas pressure regulating system and central control system;Pressure reduction boiling corrosion reaction system is arranged in heating system;Nitric acid vapor absorption drying system is connected with the pipeline of pressure reduction boiling corrosion reaction system;Gas pressure regulating system is connected with the pipeline of nitric acid vapor absorption drying system;Central control system is electrically connected with heating system and gas pressure regulating system.The utility model can realize high-fidelity simulation and reduction of high-temperature pressure reduction environment in boiling nitric acid corrosion weight loss experiment, solve the problem of simultaneous generation of nitric acid condensation phase and nitric acid vapor, the sealing problem in experimental process, gas pressure precision control problem, nitric acid tail gas emission treatment problem, realize material sample service environment accurate simulation, provide technical support for studying the boiling nitric acid corrosion corrosion resistance and service life of material sample under high-temperature pressure reduction environment.

This utility model discloses a quartz wafer etching fixture, including a handle and several fixture units for placing wafers. The fixture units are connected to the handle, and each fixture unit has a rotating shaft with movable pressure blocks to prevent wafers from falling out. The areas on the fixture units used for placing wafers have several pairs of symmetrically arranged dividing grooves corresponding to the wafers, with the dividing grooves inclined at a preset angle. This utility model enables the etching solution to form a more uniform laminar flow on the wafer surface, reducing localized corrosion differences caused by buoyancy or uneven flow. Combined with increased circulation flow, this utility model can accelerate the removal of gases generated during the etching reaction from the wafer surface, reducing the problem of gas adhesion blocking the reaction. This utility model increases the contact area between the etching solution and the wafer, resulting in a more uniform heat distribution and thus improving the stability of the etching solution's temperature field. This utility model achieves a dynamic balance between the wafer surface etching rate and the etching solution flow rate, avoiding localized over-etching or under-etching.

This utility model discloses a corrosion-resistant, mildew-resistant, and aging-resistant wood-plastic wall panel, relating to the field of wall panels. It includes a wall panel body and a frame panel. The frame panel is fixedly installed at the rear end of the wall panel body with screws. An isolation structure is provided on the inner side of the wall panel body. An outer sleeve is provided at the rear end of the frame panel. A butt joint post is integrally formed on the inner side of the outer sleeve. Butt joint grooves are provided on both sides of the wall panel body. The isolation structure includes a hollow groove, an installation groove, and an isolation plate. This utility model effectively reduces the weight of the wall panel and promotes air circulation, preventing moisture retention, inhibiting corrosion, creating a physical barrier, isolating external moisture and corrosive substances, preventing internal corrosion reactions in the wood-plastic material, preventing moisture and microorganisms from penetrating the joints, preventing mold growth in humid environments, and further protecting internal components from environmental factors such as ultraviolet radiation and temperature changes, resulting in greater aging resistance and long-term use.

This invention provides a method for preparing synthetic rutile from ilmenite concentrate and the application of a pulsed magnetic field therein, belonging to the technical field of synthetic rutile preparation from ilmenite concentrate. Specifically, this invention applies a pulsed magnetic field to the ilmenite corrosion reaction during the preparation of synthetic rutile from ilmenite concentrate. The magnetic field enhances the dissolution and diffusion of paramagnetic oxygen, accelerating the cathode oxygen reduction reaction rate, thereby promoting the corrosion reaction and achieving efficient separation of titanium and iron. This invention can significantly enhance the ilmenite corrosion reaction process, achieving iron corrosion oxidation and efficient separation of titanium and iron at relatively lower temperatures and in a shorter time, effectively solving the problems of long reaction time and low corrosion efficiency in existing ilmenite corrosion processes.

This invention discloses an acid-base responsive boron nitride nanocontainer-driven self-healing and aging-resistant synergistic anti-corrosion coating and its preparation method. The method involves in-situ growth of polydopamine on a hydroxylated boron nitride nanosheet carrier, followed by loading a benzotriazole corrosion inhibitor to obtain an acid-base responsive, highly loaded active nanocontainer (BPB). This BPB is then embedded in an epoxy resin matrix to obtain a composite anti-corrosion coating, EP-BPB. This invention's acid-base responsive, controllable-release BPB nanocontainer-assisted self-healing epoxy composite coating enables the coating to exhibit a rapid response to substrate corrosion. The released corrosion inhibitor migrates to the corroded substrate and forms a reliable protective molecular film, thereby maximizing the coating's anti-corrosion performance. Simultaneously, the coating of this invention possesses excellent UV resistance, maintaining stability under long-term exposure, making it suitable for in-situ corrosion protection of marine equipment.

This invention provides a novel method for preparing a self-supporting porous supercapacitor material, belonging to the field of supercapacitor electrode materials. The preparation method includes the following steps: immersing nickel foam in a corrosion solution containing iron salts and a sulfur source, then placing it within the coil of an alternating magnetic field induction heating device for in-situ corrosion reaction, generating an Fe-doped nickel-based composite on the pore walls of the nickel foam, thus obtaining a precursor; drying and oxidizing the precursor to obtain the novel self-supporting porous supercapacitor material; the sulfur source includes one or both of thiosulfate and thiourea; the nickel-based composite includes Ni(OH)₂ and Ni₃S₂; the nickel-based composite is a porous structure composed of nanoclusters; adjacent pores in the porous structure are interconnected. The synergistic effect of the thermal, electric, and magnetic fields of the alternating magnetic field accelerates corrosion kinetics, promotes the formation of a bicontinuous porous structure, and enhances the electrochemical energy storage performance of the material.

This invention discloses a method for detecting fluoride ion concentration and a fluoride ion indicator. The method includes: mixing silicon nanoparticles with a test solution to form a mixed solution; performing a high-temperature silicon corrosion reaction at 70–100°C; and observing the color change of the mixed solution after a predetermined reaction time to determine the concentration of fluoride ions in the test solution. The high-temperature silicon corrosion reaction can be carried out under the influence of fluoride ions. The fluoride ion concentration detection method and fluoride ion indicator provided by this invention can reduce the requirement for the quantity of fluoride ions and improve the sensitivity of fluoride ion detection by controlling the reaction temperature to make fluoride ions act as a catalyst or similar catalyst. Furthermore, this method has excellent selectivity and anti-interference properties, enabling reasonable, convenient, and low-cost fluoride detection in drinking water and industrial wastewater.

The application discloses a kind of zinc negative electrode PVA / porous carbon array protective layer femtosecond laser preparation method, zinc negative electrode material and its application, to solve zinc negative electrode dendrite growth, corrosion passivation, hydrogen evolution side reaction highlights and the problems such as existing protective layer preparation process is complex, structure regulation precision is low.The preparation method includes three steps: S1 PVA is mixed with deionized water, heated and stirred to form a semi-thick solution;S2 the solution is uniformly coated on the surface of zinc foil, and a PVA protective layer is formed after drying;S3 PVA protective layer is decomposed by femtosecond laser, and a porous PVA / porous carbon array composite protective layer is prepared.The composite protective layer enhances the interface stability through PVA, and the synergistic effect of porous carbon guiding zinc ion uniform deposition effectively inhibits dendrite growth and corrosion reaction.The application process is simple, raw materials are environmentally friendly and cost is relatively low, suitable for mass production, and provides key technical support for commercialization of aqueous zinc ion battery.